What's the plural form of covolatility? Here's the word you're looking for.
Answer
The noun covolatility can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be covolatility.
However, in more specific contexts, the plural form can also be covolatilities e.g. in reference to various types of covolatilities
or a collection of covolatilities.